DIY Nozzle Socks For Your 3D Printer

If you have a 3D printer, your nozzle and heater block are invariably covered in a weird goo consisting of decomposed and burnt plastic. There’s only one way around this – a nozzle sock, or a silicone boot that wraps around the heater block and stops all that goo from accumulating.

Right now, E3D sells silicone nozzle socks for their normal-sized heater blocks, with a release for their maxi-sized Volcano blocks coming shortly. [Ubermeisters] couldn’t wait, so he designed a 3D printed mold to cast as many Volcano nozzle socks as he could ever need.

The mold itself is taken from the mechanical drawings of the E3D Volcano hotend, printed in Proto Pasta HTPLA. To create the nozzle sock, this mold is filled with a goo made from GE Silicone I, mineral spirits, plaster of Paris, carbon powder, aluminum powder, titanium microspheres, and bronze powder colorant from Alumalite.

The mold is sprayed with release, filled with silicone goo, and slowly brought together. After a few hours, the silicone has cured, can be removed from the mold, and the flash can be cut away from the finished part. The end result is great — it fits the Volcano hotend well, and shouldn’t be covered in melted, burnt plastic in a week’s time.

All the files for the Volcano nozzle sock mold can be found on YouMagine. Alternatively, you could wait another month or two for E3D to release their ‘official’ Volcano nozzle sock.

The Tiny 3D Printers Of Maker Faire

Building a big 3D printer has its own challenges. The strength of materials does not scale linearly, of course, and long axes have a tendency to wobble. That said, building a bigbot isn’t hard – stepper motors and aluminum extrusion are made for industry, and you can always get a larger beam or a more powerful motor. [James] is going in the opposite direction. He’s building tiny, half-scale printers. They’re small, they’re adorable, and they have design challenges all their own.

At this year’s New York Maker Faire, [James] is showing off his continuing project of building baby 3D printers. He has a half-scale wooden Printrbot, a half-ish scale Mendel Max, a tiny Makerbot Replicator, and a baby delta and baby Ultimaker in the works.

Click past the break for a gallery, and more info on [James’s] tiny creations.

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Riding Rollercoasters with 3D Printed Kidneys, Passing Stones

Citizen science isn’t limited to the nerd community. When medical professionals get a crazy idea, their options include filling out endless paperwork for human consent forms and grant applications, or hacking something together themselves. When [David Wartinger] noticed that far too many of his patients passed kidney stones while on vacation, riding rollercoasters, he had to test it out.

Without the benefit of his own kidney stones, he did the next best thing: 3D printed a model kidney, collected some urine, and tossed a few stones that he’d collected from patients into the trap. Then he and a colleague rode Big Thunder Mountain Railroad sixty times, holding the model in a backpack at kidney height.

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Putting Sand, Water, and Metal into A 3D Print

[Adam] over at Makefast Workshop writes about some of the tests they’ve been running on their 3D printer. They experimented with pausing a 3D print midway and inserting various materials into the print. In this case, sand, water, and metal BBs.

The first experiment was a mixture of salt and water used to make a can chiller for soda or beer (the blue thing in the upper right). It took some experimentation to get a print that didn’t leak and was strong. For example, if the water was too cold the print could come off the plate or delaminate. If there was too much water it would splash up while the printer was running and cause bad layer adhesion.

They used what they learned to build on their next experiment, which was filling the print with sand to give it more heft. This is actually a common manufacturing process — for instance, hollow-handled cutlery often has clay, sand, or cement for heft. They eventually found that they had to preheat the sand to get the results they wanted and managed to produce a fairly passable maraca.

The final experiment was a variation on the popular ball bearing prints. Rather than printing plastic balls they designed the print to be paused midway and then placed warmed copper BBs in the print. The printer finished its work and then they spun the BB. It worked pretty well! All in all an interesting read.

MakerBot Releases Their 6th Generation Of 3D Printers

Just in time for the back to school and holiday season, Makerbot has released their latest line of printers. The latest additions to the lineup include the new Makerbot Replicator+ and the Makerbot Replicator Mini+.

The release of these new printers marks MakerBot’s first major product release since the disastrous introduction of the 5th generation of MakerBots in early 2014. The 5th generation of MakerBots included the Replicator Mini, priced at $1300, the Replicator, priced at $2500, and the Replicator Z18, priced at $6500. Comparing the build volume of these printers with the rest of the 3D printer market, these printers were overpriced. The capabilities of these printers didn’t move many units, either (for instance, the printers could only print in PLA). Makerbot was at least wise enough to continue building the 4th generation Replicator 2X, a printer that was capable of dual extrusion and printing more demanding filaments.

The release of the Makerbot Replicator+ and the Makerbot Replicator Mini+ is the sixth generation of MakerBot printers and the first generation of MakerBot’s manufactured overseas. This new generation is a hardware improvement on several fronts and included a complete redesign of the Makerbot Replicator and the Replicator Mini. The Replicator Mini+ features a 28% larger build volume than the original MakerBot Replicator Mini and an easily removable Grip Build Surface that can be flexed to remove a printed part. The Replicator+ features a 22% larger build volume than the MakerBot Replicator and a new Grip Build Surface. The Replicator Mini+ is $1000 ($300 cheaper than its predecessor), and the Replicator+ is $2000 ($500 less expensive). Both new printers, and the old Replicator Z18, now ship with the improved Smart Extruder+.

While the release of two new MakerBots does mean new hardware will make it into the wild, this is not the largest part of MakerBot’s latest press release. The big news is improved software. Makerbot Print is a slicer that allows Windows users to directly import 3D design files from SolidWorks, IGES, and STEP file formats. Only .STL files may be imported into the OS X version of the Makerbot Print software. MakerBot Mobile, an app available through the Apple Store and Google Play, allows users to monitor their printer from a smartphone.

Earlier this year, we wrote the Makerbot Obituary. From the heady days of The Colbert Report and an era where 3D printing would solve everything, MakerBot has fallen a long way. In the first four months of 2016, MakerBot only sold an average of about fifteen per day, well below the production estimated from the serial numbers of the first and second generation Makerbots, the Cupcake and Thing-O-Matic.

While this latest hardware release is improving the MakerBot brand by making the machines more affordable and giving the software some features which aren’t in the usual Open Source slicers, it remains to be seen if these efforts are enough. Time, or more specifically, the Stratasys financial reports, will tell.

Wanhao Duplicator i3 Should Put an End to “Cheapest Printer” Kickstarters

Is the Wanhao Duplicator the best printer on the market? Not at all. Is it a contender for best low-price printer?Definitely. If you consider it a low priced kit printer instead of a finished product then it’s possible that, in its price class, it is hands down the best out there.

For somewhere between 300 and 500 dollars, the Duplicator is a hell of a printer. Also selling under the name Cocoon and Maker Select, the printer is a thin folded sheet steel frame clone of the Prusa i3. I opened the box expecting the most flagrant cost cutting I could imagine. I figured the steel would be paper thin. The holes wouldn’t line up. I expected the connections to be improperly terminated. I expected a fire.

The Duplicator six screws away from being fully assembled. When the manual says find a 1m x 1m flat area to work in it's not kidding. This table was too small.
The Duplicator six screws away from being fully assembled. When the manual says find a 1m x 1m flat area to work in it’s not kidding. This table was too small.

What I got was up and printing in under an hour. What I got was something designed by someone who cares, but with an obvious cost goal. As a bonus, it even printed pretty well. As mentioned, the basic shape of the frame is that of a Prusa i3. A horizontal bit holds the bed and y movement. A vertical bit is attached to the middle of that, making a T. It holds the X, Z, and nozzle.

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Furuta Style Inverted Pendulum Is King of Geek Desk Ornaments

Newton’s Cradle is thought of as the most elegant of executive desk toys. But that 20th-century dinosaur just got run off the road as [Ben Katz]’s Furuta pendulum streaks past in the fast lane, flipping the bird and heralding a new king of desk adornments.

This Furata pendulum has wonderfully smooth movement. You can watch it go through its dance in the video after the break. Obviously you agree that this is the desk objet d’art for the modern titan of industry (geek). Just don’t stop at watching it in action. The best part is the build log that [Ben] put together — this project has a little bit of everything!

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